CIRCUIT DESIGN LMD-400-R Spezifikationen PDF herunterladen (Seite 4)

OG_LMD-400-R-AB_v10e Circuit Design, Inc.

OPERATION GUIDE

SPECIFICATIONS

LMD-400-R 438-442 MHz / 458-462 MHz

General characteristics All ratings at 25 +/-10 °C unless otherwise noted

Item Units MIN TYP MAX Remarks

Applicable standard EN 300 113

Communication method Simplex, Half-duplex

Emission class F1D

Modulation type GFSK

438.000 442.000

Operating frequency range MHz

458.000 462.000

Operation temperature range °C -20 60 No dew condensation

Storage temperature range °C -30 75 No dew condensation

Aging rate ppm -1 1 TX freq., RX Lo freq.

Initial frequency tolerance ppm -1.5 1.5 TX freq., RX Lo freq.

Dimensions mm 30 x 50 x 9 mm Not including antenna

Weight g 25 g

Electrical specification <Common>

Item MIN TYP MAX Remarks

Oscillation type PLL controlled VCO

Frequency stability (-20 to 60°C) ppm -2.5 2.5 Reference frequency at 25 °C

TX/RX switching time ms 15 20 DI/DO

Channel step kHz 12.5

Data rate bps 2400 4800 DO/DI

Max. pulse width ms 15 20 DO/DI

Min. pulse width us 200 DO/DI

Data polarity Positive DO/DI

PLL reference frequency MHz 21.25 TCXO

PLL response ms 30 60 from PLL setting to LD out

Antenna impedance Ω 50 Nominal

Operating voltage V 3.0 5.5

TX consumption current mA 52 56 Vcc = 3.0 V

RX consumption current mA 42 46 Vcc = 3.0 V

Transmitter part

Item MIN TYP MAX Remarks

RF output power mW 10 Conducted 50 Ω

Deviation kHz +/-2.0 +/-2.4 +/-2.8 PN9 4800 bps

DI input level V 0 5.5 L= GND, H = 3 V- Vcc

Residual FM noise kHz 0.08 DI=L, LPF=20 kHz

-37 < 1000 MHz, conducted 50 Ω

Spurious emission dBm

-31 > 1000 MHz, conducted 50 Ω

Adjacent CH power nW 200 PN9 4800 bps

Occupied bandwidth kHz 8.5 PN9 4800 bps

1 2 3 4 5 6 7 8 9 ... 19 20

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